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  #91  
Old 09-19-2016, 01:26 PM
Chrysopelea Chrysopelea is offline
 
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Location: santa rosa CA
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I own an SLSA, and haven't built a 12, but i THINK the autopilot only controls the trim tab on the FF stabilator.




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Originally Posted by DonFromTX View Post
This got my interest up, so I tried out the theory at the hangar. Mine stays in any position I put it! To be truthful I think the autopilot servo is providing enough resistance to keep it wherever I put it;
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  #92  
Old 09-19-2016, 01:32 PM
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rvbuilder2002 rvbuilder2002 is offline
 
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Location: Hubbard Oregon
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Quote:
Originally Posted by Chrysopelea View Post
I own an SLSA, and haven't built a 12, but i THINK the autopilot only controls the trim tab on the FF stabilator.
Nope.

The pitch servo is connected directly to the control column that your sticks are bolted too.

BTW, the primary purpose of the tab on the back of the stabilator is as an anti-servo tab.
By making its attach mechanism adjustable, it also does the job (secondary) of a pitch trim tab.
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  #93  
Old 09-19-2016, 03:38 PM
Chrysopelea Chrysopelea is offline
 
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Location: santa rosa CA
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I stand corrected.

Thanks for the information.

I'm amazed at how small the servos are, for a full scale plane I expected substantial servos, but they are no bigger than the model plane servos I use in my model planes.

During my demonstration test flight, before buying mine, while in autopilot, I felt the servo bumping back against my control inputs when it was on, and it was explained to me that that was the autopilot.

Still though, such dinky little servos. Not sure if they even have metal gears in them. I know they make some burly model plane servos with metal gears that have huge power, but VAN's knows what they're doing, so I know they've specified the correct servos for the job.




Quote:
Originally Posted by rvbuilder2002 View Post
Nope.

The pitch servo is connected directly to the control column that your sticks are bolted too.

BTW, the primary purpose of the tab on the back of the stabilator is as an anti-servo tab.
By making its attach mechanism adjustable, it also does the job (secondary) of a pitch trim tab.
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  #94  
Old 09-19-2016, 07:28 PM
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KALEWIS KALEWIS is offline
 
Join Date: Nov 2009
Location: Jackson, OH
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Quote:
Originally Posted by Chrysopelea View Post
I stand corrected.

Thanks for the information.

I'm amazed at how small the servos are, for a full scale plane I expected substantial servos, but they are no bigger than the model plane servos I use in my model planes.

During my demonstration test flight, before buying mine, while in autopilot, I felt the servo bumping back against my control inputs when it was on, and it was explained to me that that was the autopilot.

Still though, such dinky little servos. Not sure if they even have metal gears in them. I know they make some burly model plane servos with metal gears that have huge power, but VAN's knows what they're doing, so I know they've specified the correct servos for the job.

You may be mistaking the trim servo in the tail for an autopilot servo. The Dynon or Garmin servos for the autopilot are quite "beefy" with a slipper clutch and all ... Even shear pins.

http://wiki.dynonavionics.com/Servo_Application_Guide


Some good info on the servos (Dynon) can be found here.
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  #95  
Old 09-19-2016, 07:56 PM
Chrysopelea Chrysopelea is offline
 
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Location: santa rosa CA
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You are undoubtedly correct.

I've only seen the little trim servo, and I mistakenly took that as the autopilot servo.
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